See Dataset for more information.

{
  "entityType": "dataset" [immutable, generated by Dremio],
  "id": String [immutable, generated by Dremio],
  "path": [String] [immutable after creation],
  "tag": String [immutable, generated by Dremio],
  "type": String ["PHYSICAL_DATASET", "VIRTUAL_DATASET"] [immutable],
  "fields": [DatasetField] [immutable],
  "createdAt": String (RFC3339 date) [immutable, generated by Dremio],
  "accelerationRefreshPolicy": DatasetAccelerationRefreshPolicy [optional, only for physical datasets in a source],
  "sql": String [optional, required for virtual datasets],
  "sqlContext": [String] [optional, only for virtual datasets],
  "format": DatasetFormat [optional, required for promoted datasets],
  "approximateStatisticsAllowed": Boolean [optional, introduced in Dremio 2.1.0]
}